EP1279259A1 - Device and method for measuring and processing of information in a packet orientated communication system - Google Patents
Device and method for measuring and processing of information in a packet orientated communication systemInfo
- Publication number
- EP1279259A1 EP1279259A1 EP01924050A EP01924050A EP1279259A1 EP 1279259 A1 EP1279259 A1 EP 1279259A1 EP 01924050 A EP01924050 A EP 01924050A EP 01924050 A EP01924050 A EP 01924050A EP 1279259 A1 EP1279259 A1 EP 1279259A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- block flow
- measuring
- parameter
- ratio
- cell
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
Definitions
- the invention relates to a device and method for measuring and processing of information in a packet orientated communication system. More exactly is related to a method and a measuring tool for use m a wireless cellular telecommunication and data communication system including a GPRS-network and which makes possible measuring, the result of which can be used i.a. to minimize the time required for change of cell, cell re-selection, in said network.
- Circuit switched transmission of data means that users reserves and get access to a certain bandwidth and transmission speed.
- Existing wireless systems for instance GSM (Global System for Mobile communication) , which primarily are developed for transmission of speech, are circuit switched. Irrespective of how much data that are transmitted, the whole bandwidth is available as long as the connection is set up. It is stable and reliable, but does not utilize the resources of the network very efficiently.
- GSM Global System for Mobile communication
- Packet switching of data means that the information that shall be transmitted is divided into data packets. If there are a lot of data to be transmitted, a large bandwidth is required, and vice versa.
- the packets which can be of various sizes, are transmitted as soon as it is possible.
- GPRS General Packet Radio Services
- GSM Global System for Mobile Communications
- GPRS goes well with other packet switching services, for instance all Internet services which utilize the packet protocol TCP/IP.
- GPRS is adapted to radio communication with mobile stations.
- a GPRS network consequently includes a plurality of base stations which are interconnected m a fixed network. Each base station has coverage for radio communication with mobile stations within an area called cell, and these cells overlap each other so that a mobile station can move from one cell to another without risk of loosing contact with the fixed network.
- the cells also can be hierarchically arranged, at which a big cell includes a number of smaller cells .
- the fixed network can change cell if the contact between an existing base station and a mobile station is regarded as inferior. If the mobile station is in a place which also is covered by a second base station, it is conceivable to change base station to get a higher quality of the communication. If change of cell is made during transmission of data, this, however, results in an interruption in the data communication between the fixed network and the mobile station, which of course is not wanted.
- the efficient data transmission speed will depend on i.a. how often MS (Mobile Station) changes cell, i.e. cell re-selection, and how fast the procedures which are connected to this are performed.
- the present invention therefore aims at providing a method and a tool which make measurements possible, the results of which can be used to minimize the time that is needed for cell re-selection, for example via optimization of parameters .
- the present invention consequently relates to a device for measuring and processing of information m a communication system which includes a packet switching communication network, in which communication network a base station is arranged to cover a cell, and a mobile station which can communicate wirelessly with said base station within said cell for transmission of data packets in a temporary block flow.
- the device is characterized in a test unit including: measuring device adapted to measuring of the value of a first parameter during said transmission of data packets in a first block flow, and for measuring of the value of a second parameter between the first block flow and a second block flow; storing device adapted to storing of measurement values of said parameters; calculation device adapted to calculation of ratios depending on said measurement values.
- the measuring device is preferably arranged m one for the purpose especially arranged test mobile. Further, the invention relates to a method for measuring and processing of information in a communication system as above, which method is characterized m the steps to:
- Figure 1 shows a flow chart of a preferred procedure according to the invention.
- the invention relates to a device and a procedure for measuring and processing of information in a communication network which is adapted to packet switching services, for instance GPRS.
- a test unit includes a measuring device which is used to measure the time of transmission of data between a mobile station and the fixed network.
- a temporary block flow for transmission of one or more LLC PDU (Logical Link Control Protocol Data Unit), in this application called data packets, between a mobile station MS and the fixed network, a temporary block flow, TBF (Temporary Block Flow) is established.
- TBF Temporal Block Flow
- TBF is finished when all data packets have been transmitted, but can also be finished/stopped prematurely for other reasons. For instance can cell re-selection cause interruption m TBF.
- the test unit also includes a storing device, which for instance can be an optical or magnetic disk memory, or a simple memory circuit, for storing of parameter values which said device has measured.
- a storing device which for instance can be an optical or magnetic disk memory, or a simple memory circuit, for storing of parameter values which said device has measured.
- the test unit further includes one for that purpose adapted detecting device.
- This detecting device includes first detection means adapted to detect if a block flow has been prematurely interrupted, and if all data packets in the block flow have been transmitted/ transferred. Further, the detection device includes second detection means adapted to, for a prematurely interrupted block flow, detect what has caused the interruption.
- the test unit decides, based on the detected reason for TBF having been finished/stopped, if the time shall be measured until a new TBF is established. If the detected reason is a change of cell, and it at the same time is detected that not all data packets in TBF have been correctly transmitted/transferred, the measuring device also measures the time from the interruption of the first TBF to the start of next TBF. Also this parameter value is stored in said storing device. Further, the test unit includes a calculation device adapted to processing of the in the storing device stored data. The calculation device is, for instance, adapted to generate a ratio between time for data transmission and time for change of cell, a ratio which is very useful at network optimization.
- the calculation device can also be used to make a comparative measuring of, for example, an average data speed for just any measuring interval, where the time for change of cell is included respective excluded.
- the test unit is arranged in a mobile station MS, which is adapted to communication in the packet switching communication network. This MS then constitutes an especially adapted test-MS, adapted to collect and process data according to the above from different places within the coverage area of the network.
- the test unit is integrated in the fixed network, arranged to detect signals from a plurality of base stations and at that detect changes of cell for mobile stations.
- Figure 1 is illustrated n a flow chart the principle of a preferred procedure of the invention. The flow relates to both collection and processing of data.
- a measuring series index I is set to a start value (2), for instance the value 0.
- the measuring device is triggered to start measuring (4) of active time Ta [I] for the measuring series I.
- active time is consequently meant the time during which data is transmitted in a TBF.
- the detection device of the test unit also checks why TBF has been finished/ stopped (9) .
- TBF has been finished/ stopped
- In the preferred embodiment is at that first checked if it is a change of cell that has caused the interruption in the communication. If that is the case, is after that checked if there after all has been time enough for all data packets to be transmitted/transferred correctly (10). If the transmission has not been finished correctly, measuring of inactive time Ti [i] starts for the measuring series (12) .
- inactive time is meant the time from the point of time of interruption (6) of a first interrupted TBF, to the starting point of time (13) for a second TBF, during which the second TBF is finished.
- the test unit checks if an external condition is fulfilled (15). This can, for instance, be that a preset number of measuring series have been finished. If the external condition has not been fulfilled, the measurement series index is stepped up one step, (16) after which a new measurement series consequently starts by measuring of active time Ta [l+l] (4) from the starting point of time of said second TBF (13) .
- This second measurement series l+l proceeds in the same way as the first series I, and after that is checked again if an external condition has been fulfilled (15) .
- the calculation device of the test unit calculates preset ratios (17), by means of the m the storing device stored parameter values.
- the measuring block (18) is finished.
- the procedure is extended by the measuring device at start of a TBF (3) also starts measuring of a third parameter D[i] (5) . That this measurement represents an alternative embodiment is indicated in the figure by dashed edge lines and arrows.
- the measurements D[i] are stopped and are stored (8) when TBF is finished (6) .
- the transmitted/transferred bits that are measured need not include all RLC-data. It will, for instance, be possible to chose to exclude header information from certain overlaying protocols.
- the total amount of transmitted data can be used for calculation of average data speed with and without change of cell. This type of comparing measuring is also very useful at network optimization.
- the calculation device is preferably arranged to calculate ratios based on the values of all three parameters. For a whole measurement block is consequently calculated:
- the process steps are realized according to the flow chart in Figure 1 of a computer program product which includes a storing medium.
- Said storing medium can for instance be an optical or magnetic disk memory, or a hard disk.
- the computer program product is at that adapted to be used with a computer system that includes a processor, a memory device and an input and output device.
- the computer program product includes devices stored on said storing medium, for control of the computer system to perform each of the process steps which have been described with reference to Figure 1.
- Embodiments of the invention are useful within several different fields of application. Some examples are: performance evaluation of different parameter settings in test environment; - performance evaluation of different parameter settings for GPRS in the GSM-network, for instance hierarchical cell grouping; to, with the aim of optimization, compare data speed between areas (which can have different cell structure), without the results being influenced by the number of change of cells; to evaluate possible efficiency losses/gains with network initiated change of cells; and evaluation whether low data speed in an area depends on cell structure/parameter setting.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
- Mobile Radio Communication Systems (AREA)
- Maintenance And Management Of Digital Transmission (AREA)
- Multi-Process Working Machines And Systems (AREA)
- Communication Control (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE0001487 | 2000-04-26 | ||
SE0001487A SE514884C2 (en) | 2000-04-26 | 2000-04-26 | Apparatus and method for measuring and processing information in a packet-oriented communication system |
PCT/SE2001/000833 WO2001082536A1 (en) | 2000-04-26 | 2001-04-12 | Device and method for measuring and processing of information in a packet orientated communication system |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1279259A1 true EP1279259A1 (en) | 2003-01-29 |
EP1279259B1 EP1279259B1 (en) | 2007-07-25 |
Family
ID=20279406
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01924050A Expired - Lifetime EP1279259B1 (en) | 2000-04-26 | 2001-04-12 | Device and method for measuring and processing of information in a packet orientated communication system |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP1279259B1 (en) |
AT (1) | ATE368340T1 (en) |
DE (1) | DE60129546T2 (en) |
DK (1) | DK1279259T3 (en) |
ES (1) | ES2291309T3 (en) |
NO (1) | NO330066B1 (en) |
SE (1) | SE514884C2 (en) |
WO (1) | WO2001082536A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100785843B1 (en) | 2006-09-29 | 2007-12-13 | 현대자동차주식회사 | Roof antenna mounting means of vehicle |
US20130272219A1 (en) * | 2012-03-13 | 2013-10-17 | Qualcomm Incorporated | Methods and apparatus for backhaul sharing by femtocells |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IL117366A (en) * | 1996-03-04 | 1999-05-09 | Madge Networks Israel Limited | System for parameter analysis in asynchronous transfer mode (atm) networks |
AU774267B2 (en) * | 1998-11-24 | 2004-06-24 | Niksun, Inc. | Apparatus and method for collecting and analyzing communications data |
FI112842B (en) * | 1999-01-11 | 2004-01-15 | Nokia Corp | Method and apparatus for realizing a continued packet switching radio connection |
-
2000
- 2000-04-26 SE SE0001487A patent/SE514884C2/en not_active IP Right Cessation
-
2001
- 2001-04-12 ES ES01924050T patent/ES2291309T3/en not_active Expired - Lifetime
- 2001-04-12 EP EP01924050A patent/EP1279259B1/en not_active Expired - Lifetime
- 2001-04-12 DE DE60129546T patent/DE60129546T2/en not_active Expired - Lifetime
- 2001-04-12 AT AT01924050T patent/ATE368340T1/en not_active IP Right Cessation
- 2001-04-12 WO PCT/SE2001/000833 patent/WO2001082536A1/en active IP Right Grant
- 2001-04-12 DK DK01924050T patent/DK1279259T3/en active
-
2002
- 2002-10-07 NO NO20024828A patent/NO330066B1/en not_active IP Right Cessation
Non-Patent Citations (1)
Title |
---|
See references of WO0182536A1 * |
Also Published As
Publication number | Publication date |
---|---|
ATE368340T1 (en) | 2007-08-15 |
EP1279259B1 (en) | 2007-07-25 |
ES2291309T3 (en) | 2008-03-01 |
SE0001487L (en) | 2001-05-14 |
NO20024828L (en) | 2002-12-27 |
DE60129546D1 (en) | 2007-09-06 |
NO330066B1 (en) | 2011-02-14 |
SE0001487D0 (en) | 2000-04-26 |
WO2001082536A1 (en) | 2001-11-01 |
DK1279259T3 (en) | 2007-11-26 |
DE60129546T2 (en) | 2008-05-29 |
NO20024828D0 (en) | 2002-10-07 |
SE514884C2 (en) | 2001-05-14 |
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